Scott Heatwole, an engineer for NASA, is in the process of developing a low-cost precision attitude sensor or “star tracker” that would be able to locate stars and use them as points of reference in the sky during daylight hours. Dude. Sweet.

Five new NASA airborne field campaigns, including one managed by NASA's Jet Propulsion Laboratory, Pasadena, California, will take to the skies starting in 2015 to investigate how long-range air pollution, warming ocean waters and fires in Africa affect our climate.

An unmanned commercial rocket built by Orbital Sciences, on a mission to carry supplies to the International Space Station, exploded seconds after lifting off Tuesday evening at NASA’s Wallops Flight Facility launch site in Virginia.

The third Orbital Sciences cargo mission to the International Space Station under NASA's Commercial Resupply Services contract is scheduled to launch at 6:22 p.m. EDT Tuesday, Oct. 28, from Pad 0A of the Mid-Atlantic Regional Spaceport at NASA's Wallops Flight Facility in Virginia.

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.